Science Dept Christmas 2014

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Across
  1. 1. . . . . . and the enormous prunus (F)
  2. 4. Art's colleague (F)
  3. 5. One in every Dept. (F)
  4. 7. PATman (S)
  5. 9. Try amoral gear (anagram FS)
  6. 10. Endless Heather (F)
  7. 11. Prefect Mum (S)
  8. 14. Descendant of Howards End author? (S)
  9. 15. Descendant of one 'ell of a Royalist Cavalier? (S)
  10. 17. With Farmer is cockney for Haemorrhoids (F)
Down
  1. 2. Brand new oar (anagram FS)
  2. 3. ex Radio 1 DJ sounds tired (S)
  3. 6. A mere title run (anagram FS)
  4. 8. Soap or bird (S)
  5. 11. Gaelic origin of 16 down (F)
  6. 12. Lady of the shed (S)
  7. 13. A rotational one invented by James Hargreaves (F)
  8. 16. Not glossy (F)